first shut down your system and reboot when it's rebooting keep pressing f8 to launch the advanced boot menu. run windows in safe mode with networking, goto avira and download it's free antivirus software and scan your system. you will have to uninstall all your other antivirus software first. avira i have found is the best free antivirus and even better than any paid one i have come into contact with too. it has time and again found viruses other ones have missed. if u still have problems then you may have tyo go one step further.
i would suggest backing up your most important files you want to keep onto a removable media. goto the sites related to your video sound drivers etc.. and download copies for them, getting a copy of hirens boot cd is a good cd to have it has a program on it that backs up your drivers without the need to goto individual sites for copies. then reinstall your whole system from scratch. after you do that install your network driver so that you can access the internet, then when u have internet access goto avira.com download the free antivirus software. then connect your removable media with your backed up files and drivers and scan it, if you have any zip or rar files set the configuration on avira's expert mode to search 99 levels deep on archives. in fact set all the options to their most effective, you should be able to figure out those as you see them. if not reply again. i hope this helps. if you dont have any removable media for your system and cant afford to buy some then hirens boot cd has some great data recovery software that u can use to get back files u have deleted and or lost due to reinstalling windows.
Edited by neilmac, 26 October 2009 - 02:55 AM.